package com.hmdp.utils;

import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;

@Component
public class RedisWorker {

    @Resource
    StringRedisTemplate stringRedisTemplate;
    private final Long BEGIN_TIMESTAMP = 1640095200L;

//    public RedisWorker(StringRedisTemplate stringRedisTemplate){
//        this.stringRedisTemplate =  stringRedisTemplate;
//    }

    public long nextId(String keyPrefix){
        //生成时间戳
        LocalDateTime now = LocalDateTime.now();
        long nowSecond = now.toEpochSecond(ZoneOffset.UTC);
        long timestamp = nowSecond - BEGIN_TIMESTAMP;

        //生成序列号
        String date = now.format(DateTimeFormatter.ofPattern("yyyy:MM:dd"));
        long count = stringRedisTemplate.opsForValue().increment("icr" + keyPrefix + ":" + date);

        //拼接字符串

        return timestamp << 32 | count;
    }
}
